1. Department of Epidemiology, Gillings School of Global Public Health, The University of North Carolina at Chapel Hill, North Carolina.
2. Department of Nutrition, Gillings School of Global Public Health, The University of North Carolina at Chapel Hill, North Carolina.
3. Department of Biostatistics, Gillings School of Global Public Health, The University of North Carolina at Chapel Hill, North Carolina.
4. Carolina Population Center, The University of North Carolina at Chapel Hill, North Carolina.
5. Department of Psychiatry, The University of North Carolina at Chapel Hill, North Carolina.